{"id":"RLSA-2026:66542","summary":"Important: nginx security update","details":"nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. \n\nSecurity Fix(es):\n\n* nginx: NGINX: Arbitrary code execution via crafted HTTP requests (CVE-2026-42533)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-09-11T12:30:02.624979425Z","published":"2026-09-11T12:05:26.835797Z","upstream":["CVE-2026-42533"],"database_specific":{"license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:66542"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:66542"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2500967"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:66542"}],"affected":[{"package":{"name":"nginx","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/nginx?distro=rocky-linux-9&epoch=2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:1.20.1-28.el9_8.6.rocky.0.1"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:66542.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}